<template>
	<div class="todo-header">
		<input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model="title" @keyup.enter="add"/>
	</div>
</template>

<script>
    //md5校验
    import {nanoid} from 'nanoid'

    export default {
        name:'MyHeader',
        props:['addTodo'],
        data(){
            return {
                title:''
            }
        },
        methods: {
            add() {
                if(!this.title.trim()) return alert('输入不能为空')
                
                //UUID精简版本 的 nanoid进行生成唯一的id
                const todoObj = {id:nanoid(),title:this.title,done:false}
                // console.log(todoObj);
                this.addTodo(todoObj)
                //点击添加后，自己去清空
                this.title = ''
            }
        }

    }
</script>

<style scoped>
	/*header*/
	.todo-header input {
		width: 560px;
		height: 28px;
		font-size: 14px;
		border: 1px solid #ccc;
		border-radius: 4px;
		padding: 4px 7px;
	}

	.todo-header input:focus {
		outline: none;
		border-color: rgba(82, 168, 236, 0.8);
		box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
	}
</style>